I know but that is what I was arguing as my sentence states if one beating is right after the other indicating I was talking about two beating and not one full one

Let me explain the math to you. You start out with 100% health and get beaten to half that, thus you are now at 50% if you now get another beating that yet again takes half of that off, you start at 50% and end at 25% so the number is not two in the equation. Now if you take the two beating who took out a total of 50% and 25% of your health then you get to the number 75%

50+(50*50/100)=75

Fine two beatings of half to death so a beating equal to 75% to death if done one right after the other.